Not only is this set ancient by TCG standards, but it also made history: EX Emerald was the first English expansion to include Holofoil Basic Energy cards
Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.) Except for its color, the token copies exactly what was printed on the original creature and nothing else (unless that permanent is copying something else or it is a token
This effect works best in multiplayer games, such as Commander, where the likelihood of a player choosing to let you draw a card rather than paying the one mana is much higher
This isnt good at being a removal spell or threat, but combine they provide ample utility
In your upkeep you exile two cards and then you can cast them this turn, so that's card flow
Lets start with the best category the cards that are just good rates